EOD Primary Tumor
Notes
**Note 1:** **Multiple simultaneous tumors**
* In the case of multiple simultaneous tumors, code the tumor with the greatest extension.
**Note 2:** **Skin ulceration**
* Skin ulceration does not alter the classification.
| Code |
Description |
SS2018 T |
| 000 |
Carcinoma in situ, noninvasive
Intraepithelial Bowen disease; intraepidermal |
IS |
| 100 |
Lesion(s) confined to dermis
Subcutaneous tissue (through entire dermis) |
L |
| 200 |
Bone
Cartilage
Skeletal muscle
Underlying cartilage |
RE |
| 700 |
Further contiguous extension |
D |
| 800 |
No evidence of primary tumor |
U |
| 999 |
Unknown; extension not stated
Primary tumor cannot be assessed
Not documented in medical record
Death Certificate Only |
U |
(1) Fritz AG, Ries LAG (eds). **SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998)**, National Cancer Institute, NIH Pub. No. 98-2313, Bethesda, MD, 1998
(2) Young JL Jr, Roffers SD, Ries LAG, Fritz AG, Hurlbut AA (eds.). **SEER Summary Staging Manual-2000: Codes and Coding Instructions**, National Cancer Institute, NIH Pub. No. 01-4969, Bethesda, MD, 2001.
(3) Collaborative Stage Work Group of the American Joint Committee on Cancer. **Collaborative Stage Data Collection System User Documentation and Coding Instructions, version 02.05**. American Joint Committee on Cancer (Chicago, IL)
